<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.0 Transitional//EN"> <html xmlns:o="urn:schemas-microsoft-com:office:office" = xmlns:w="urn:schemas-microsoft-com:office:word" = xmlns="http://www.w3.org/TR/REC-html40"> <head> <META HTTP-EQUIV="Content-Type" CONTENT="text/html; = charset=us-ascii"> <meta name=ProgId content=Word.Document> <meta name=Generator content="Microsoft Word 10"> <meta name=Originator content="Microsoft Word 10"> <link rel=File-List href="cid:filelist.xml@01C6182A.CA73D640">  <style>  </style>  </head> <body lang=EN-US link=blue vlink=blue style='tab-interval:.5in' = id="role_body" bottomMargin=7 leftmargin=7 topmargin=7 rightMargin=7> <div class=Section1> Sounds like a = great plan for a newer piano without a lot of wear. What I have found, though, when working on older pianos what haven’t been regulated forever is = that there are dimples worn in the letoff buttons. On = such pianos I will only turn the letoff screws in = 180 degree increments, preferably 360 degree = increments unless I know I can be back for follow up adjustments. If you stop some = place in between then the heel of the jack is rubbing on a high spot and = you’ll end up with hammers blocking when you come back the next year. = <o:p></o:p> <o:p> </o:p> By limiting adjustments to 180 = degree turns it is difficult to set the hammers to just wink uniformly off a = set up as Dave describes. <o:p></o:p> <o:p> </o:p> <div> Dean<o:p></o:p></fon= t> Dean May       &nbs= p;     cell 812.239.3359<o:p></o:p> PianoRebuilders.co= m   = 812.235.5272<o:p></o:p> Terre Haute = IN  = 47802<o:p></o:p> </div> <o:p> </o:p> -----Original = Message----- From: = pianotech-bounces@ptg.org [mailto:pianotech-bounces@ptg.org] On Behalf Of Piannaman@aol.com Sent: Thursday, January = 12, 2006 11:26 PM To: pianotech@ptg.org Subject: Upright let-off = jig <o:p> </o:p> <div> I'm sure someone's thought of this before, so forgive me if my idea is = unoriginal!<o:p></o:p> </div> <div>  <o:p></o:p= > </div> <div> For those of you who use Bill Spurlock's grand letoff jig, this should sound familiar.  Every upright has a built in let-off jig:  the = hammer rail.  Today I was playing with a Hallet-Davis (Pearl River = version) that's about 3 years old.  It needed let-off regulation in a bad = way, so I experimented with the hammer rest rail.  On this particular piano, = I could push it far enough forward so the hammers were close to the strings, even ON the strings.  Some pianos won't allow for that much = movement, but this one did.  <o:p></o:p> </div> <div>  <o:p></o:p= > </div> <div> I set a some samples for letoff, then pushed the rail forward to the point where those hammers would wink when I depressed the key.  I blocked = the rail so it stayed there, then adjusted the let-off to make the hammers wink.  Worked like a charm.  = <o:p></o:p> </div> <div>  <o:p></o:p= > </div> <div> Pianos that won't allow for such free motion of the hammer rail may require = something to clamp onto the rail for the shanks to rest on--the Spurlock jig comes immediately to mind.<o:p></o:p> </div> <div>  <o:p></o:p= > </div> <div> Hope this helps someone in some small way!<o:p></o:p> </div> <div>  <o:p></o:p= > </div> <div> Dave Stahl Dave Stahl Piano Service 650-224-3560 <a = href="http://www.dstahlpiano.net/">http://dstahlpiano.net/</a><o:p>= </o:p> </div> </div> </body> </html>